Research Article
Early Pollen Sensitization in Children Is Dependent upon Regional Aeroallergen Exposure
Table 2
Most common aeroallergens by age group.
| | 2-3-year-old children | Pollen | Positive percent of
16 children |
| | Most common weeds | Russian thistle | 60% | | Pigweed | 58% |
| | Most common grasses | Timothy | 45% | | Alfalfa | 56% | | Brome | 40% | | Johnson | 40% |
| | Most common trees | Walnut | 75% | | Olive | 55% | | Mountain cedar | 50% | | Willow | 50% | | Sweet gum | 33% | | Mulberry | 43% | | Pine | 25% |
| | 4-5-year-old children | Pollen | Positive percent of
51 children |
| | Most common weeds | Russian thistle | 54% | | Pigweed | 46% | | Sagebrush | 43% |
| | Most common grasses | Timothy | 42% | | Johnson | 44% | | Alfalfa | 37% |
| | Most common trees | Olive | 42% | | Maple | 39% | | Willow | 31% | | Sweet gum | 23% | | Mulberry | 29% | | Pine | 19% |
| | 6-7-year-old children | Pollen | Positive percent of
56 children |
| | Most common weeds | Russian thistle | 68% | | Pigweed | 61% | | Sagebrush | 49% |
| | Most common grasses | Saltgrass | 58% | | Timothy | 48% | | Bermuda | 45% | | Johnson | 45% |
| | Most common trees | Willow | 39% | | Sweet gum | 32% | | Mulberry | 36% |
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